Hook up a Makey Makey to right arrow key input. Wire the right input to the top of a clothespin and earth input to the bottom of the clothespin. Secure the wiring with copper tape. As long as your clothes pin is closed or grabbing a conductive object, the squirrel should tell you "Yes, the object is conductive." If the object is not conductive, squirrel will let you know. Video of game in action: https://twitter.com/gravescolleen/status/827290397969883137?s=20
I think that maybe seeing Josh Burker's "Is it Conductive?" Scratch game subliminally made me create this. I made a random art piece out of old phone guts for a design challenge as an example for my school and I thought it'd be fun to wire up a clothespin to test random objects to see if they are conductive or not!